Nice. I like this function more than the array iterator classes I've seen.
The &$iter; syntax in the documentation is evil though. If you use it it will break things sooner or later. It's better to change them all to $iter->(). (See perlfaq7, "What's the difference between calling a function as &foo and foo()?")
See perltoc if you don't know which perldoc to read!
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